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acro-brat n. little kids who use thier bikes like pogo sticks, with pegs coming out of the front axle. Should be confined to the Circus or other freak show reviews.

afterglow v. to hang out after a race discuss what you experienced on the trail.

age marks n. the holes in a rider's apparel that reveal the age of the garment and the longevity of the rider's participation in mountain biking.

air n. space between the tires and the ground. (Both tires must be off the ground or it isn't "air".) Said to be caught or gotten. See sky.

anchor n. your child, or children (anchors) that keep(s) you from riding. "Wait till you anchors grow up, you'll have road rash for breakfast and prunes for dinner!" To be used as an endearing, not demeaning, phrase.

ano adj. frequently-misspelled abbreviation for "anodized". See purple.

ATB n. All-Terrain Bike or Biking. A synonym for MTB.

auger v. to involuntarily take samples of the local geology, usually with one's face, during a crash. See face plant.

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